Acute Setting Key Concepts Flashcards
Describe an intracapsular hip fracture
- Higher complication because of limited blood supply
- Repair with compression screw (or 2-3) if non-displaced
Describe the Garden classification stages for sub-capital fractures
- Predicts AVN
- Stage 1: non-displaced incomplete
- Stage 2: non-displaced complete
- Stage 3: complete but incompletely displaced (unstable)
- Stage 4: complete & completely displaced (unstable)
How is an intertrochanteric hip fracture repaired
- Repaired by THA
- Bipolar or unipolar
How is a subtrochanteric hip fracture repaired
- Repaired with compression screw + intramedullary rod gamma nail
- Compression screw & plate
Difference between a stable versus unstable pelvic fracture
- Stable: only one break in the pelvic ring (can mobilize)
- Unstable: 2 or more breaks in the ring or malalignment
What are the 9 do not want to miss serious pathologies
- Major depression
- Suicide risk
- Femoral head & neck fractures
- Cauda Equina Syndrome
- Cervical myelopathy
- AAA
- DVT
- PE
- Atypical MI
What is the normal range for Troponin
- <0.03 ng/mL
- Used as criterion standard for defining & diagnosing myocardial infarction (MI)
Describe normal and abnormal BNP labs values
- Normal: <100
- Cardiac disease: 100-300
- Mild sx and slight limitation during ordinary activity: >300
- Marked limitation in activity due to sx: >600
- Severe limitations & experience sx at rest: >900
What are the ranges for INR for normal and different diagnoses
- Normal: 0.8-1.2
- VTE/PE/A-fib: 2.0-3.0
- Stroke: 2.0-2.5
- Prosthetic heart valves: 2.5-3.5
- Lupus anticoagulant: 3.0-3.5
- Higher risk of bleeding: >3.6
What does D-Dimer test for
- Test for possible VTE
- Is a protein fragment produced when a blood clot gets dissolved into the body
- Typically undetectable or at really low levels unless when a blood clot is being dissolved
What does CRP (C-reactive protein) test for
- General marker of inflammation, acute or chronic
- Elevated >10 is usually positive
- Protein produced by the liver
What is the H&H rule of thumb
- Hemoglobin and hematocrit should be 10 & 30
- If lower use a sx based approach
What does hemoglobin assess and describe if trending up versus down
- Assess anemia, blood loss, bone marrow suppression
- Trending upwards: polycythemia
- Trending downwards: anemia
- Reference values: males -> 14-17; females -> 12-16
What does hematocrit assess for and describe if trending up versus down
- Assess blood loss and fluid balance
- Trending upwards: polycythemia
- Trending downwards: anemia
- Reference ranges: males -> 42-52%; females -> 37-47%
Lab values and normal ranges for liver function/hepatic panel
- Serum Albumin (half life 21 days): 3.5-5.2
- Serum pre-Albumin (half life 2 days): 19-39; causes if trending down include burns, malnutrition, & thyroid disease
- Serum Bilirubin: normal -> 0.3-1.0; critical range -> >12